[Jie Weinuo to recommend the star product - flange plate duct] Jie Weinuo Industrial processing of various ventilation pipe, duct there are special requirements can be sprayed fresh air duct design, the company has an electrostatic powder coating line external processing, [捷维诺 to recommend the star product - black and white iron duct price advantage] unique production and installation of air duct should be consistent with design drawings, contracts, and the relevant technical standards to implement the new wind pipe manufacturers, are changed must have design or contract notice or technical changes approved visa. 2.2 duct system before construction, construction units and construction units should, supervision, general contracting and design units to coordinate with other pipeline piping duct position to approve the reserved and cavity. Construction should [Jie Weinuo to recommend the star product - Tianjin galvanized duct] Jie Weinuo flange plate duct automatic production line, Nissan duct 2400 square meters. Duct total plate integrally formed with the flange. Can processing, low fees.